US 10,891,885 B2
Method and test machine platform for quickly searching for common voltage of display panel
Chia-Hang Lee, Chongqing (CN)
Assigned to CHONGQING ADVANCE DISPLAY TECHNOLOGY RESEARCH, Chongqing (CN); and CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., Chongqing (CN)
Appl. No. 16/463,372
Filed by CHONGQING ADVANCE DISPLAY TECHNOLOGY RESEARCH, Chongqing (CN); and CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., Chongqing (CN)
PCT Filed Nov. 8, 2018, PCT No. PCT/CN2018/114478
§ 371(c)(1), (2) Date May 23, 2019,
PCT Pub. No. WO2020/087556, PCT Pub. Date May 7, 2020.
Claims priority of application No. 2018 1 1275555 (CN), filed on Oct. 30, 2018.
Prior Publication US 2020/0320914 A1, Oct. 8, 2020
Int. Cl. G09G 3/00 (2006.01)
CPC G09G 3/006 (2013.01) [G09G 2320/0247 (2013.01); G09G 2320/0673 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of quickly searching for a common voltage of a display panel, comprising the following steps of:
measuring a flicker value of the display panel at any at least three different common voltage values;
performing a power conversion on at least three the flicker values above, and performing a unary quadratic function fitting on the converted flicker value and the corresponding common voltage; and
obtaining the common voltage value corresponding to the vertex of the unary quadratic function as a common voltage of the display panel.